The summer sun has a way of transforming cars into ovens, and it’s no fun sweating while you wait for the air conditioner to provide some relief. You can speed things up with a bizarre yet apparently effective little trick.

To pull off the magic, roll down a window on one side of the car, and open and close the door on the opposite side several times. The increased air circulation can drop your vehicle’s overheated temperature by double digits.

Watch this Chinese-subtitled Japanese video for a demonstration:

Has the trick worked for you? What else do you do to cool things down quickly?

TIL You can instantly cool down a car that has been sitting under the sun by rolling down the window on one side and opening and closing the door on the other side 5-6x [Reddit via Lifehacker]

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